Sole roughing tool



Dec. 11 194-5. w, ANDE I 2,390,633

SOLE ROUGHING TOOL Filed Jan. 1s, 194s I I I, ,2 f5

Patented Dec. 11, 1945 William Scott Anderson signor to Penn-Standa ess,Inc., Delaware 3 Claims.

This invention relates to leather roughening tools and more specificallyto a tool for rougheningthe margins of shoe soles,

In the repairing-of shoes it is general practice to remove the wornoutsole from the shoe upper andthen apply anew outsole to the upper witha suitable cement. To repairshoes in this manner, it isimperative thatthe new outsolebe properly roughened around its entire margin, in orderthat the leather fibers are loosened to provide an anchorage for thecement.

Heretofore, sole roughening tools have been available to shoe repairers.However, such tools have had'serious shortcomings which make use thereofhazardous as, unless extreme care is taken, the repairers hand holdingthe sole during-the roughening operation is liable to be lacerated bythe sharp roughing spikes and, if the tool is drawn acrossthe avoid suchin-jury,-the handling thereof is an unnatural motion for the repairersarm, thus the operation becomes tiresome and often results in portionsof the shoe sole margin being improperly roughened and, in some places,unroughened portions are left which result in an insecure bond of theoutsole to the shoe upper. Often the unroughened portion breaks awayfrom the upper allowing dirt and grit to enter between the upper andsole which finally cuts the remaining cement bond so that the shoe hasto be prematurely again repaired.

A general object of this invention is to provide a sole roughening toolof improved construction which, is simple, efiicient to operate, and iseconomical to manufacture.

Another object of this invention is to provide a sole roughening toolhaving a handle so positioned to allow proper and complete roughening ofa sole without danger to the user thereof.

A further object of this invention is to provide a sole roughening toolhaving a roughing strap secured to an arcuate face so that regardless ofthe are which the users arm describes some of the roughing spikes willalways be in contact with the sole.

A still further object of this invention is to provide improved meansfor clamping a roughing strap to a sole roughening tool.

Other objects of this invention will in part be obvious and will, inpart, appear hereinafter.

The invention accordingly comprises the features of construction,combination of elements, and arrangements of parts which will beexemplified in the construction hereinafter set forth sole in a mannerto Philadelphia, Pa., asrd Sole Cementing Proc- Philadelphia, Pa., 'acorporation of Application January 13, 1945, Serial No. 572,726

and the scope of theinventionwill be indicated in the claims.

v For a fuller understanding of the nature and objects of the invention,reference should be had to the following detailed description, taken inconnection with the accompanying drawingm'n which:

Fig. 1 is a plan view of a sole roughening tool constructed inaccordance with tl e principles of this invention, and showing itsapplication to the roughening of an outsole;

Fig. 2 is a side elevation partly in section and taken along lines 2-2of Fig. 1; and

Fig. 3 is a transverse sectional view taken along lines 33 of Fig. 1, 7

Referring to the drawing, there is shown a sole roughening toolcomprising a unitary casting I B, one end of which terminates in anarcuate holder H having a groove I2 formed in its convex face [3 andextending around one end of the holder and part way along its upperconcave face The groove I2 is narrower than the width of the holder IIthus leaving the vertical walls I 5 and I5 which serve to laterallyconfine a roughing strap ll of card cloth or the like.

The roughing strap 11 is secured to the holder by the clamp plates I 8and I 9 which are tensioned toward the holder by the screws 20 and 2|.

Each end of the slot I2 is formed deeper than the portion extendingalong the convex face I 3 in order to allow the clamp plates l8 and I9to be flush with the general contour of the: holder.

Extending from the bottom of the groove l2 at each end thereof anddirectl under the clamp plates are the tines 22 which penetrate theunspiked portions of the roughing strap I! when the clamp plates aretightened.

The other end of the casting It) forms a handle 23 which extends fromthe holder H and, as shown in Fig. 1, forms an acute angle with theroughing strap receiving groove l2.

In using the above described tool, the sole S is rested on a suitablebench and the tool is re ciprocated across the sole margin in adirection as shown by the arrows in Fig. 1.

It is natural for a person to stand in front of the work. Thus, the handused to reciprocate the tool is offset with respect to the work. Thisconstitutes no impediment when using the tool of this invention as thehandle 23 being at an angle to the roughing strap holder compensates forthe users arm being offset and allows the tool to be reciprocated withthe natural movement of the arm which is at an angle to the margin ofthe shoe sole, and the roughing strap is not in line with the usersother hand serving to hold and turn the sole as it is being roughened.

Furthermore, as the roughing strap is clamped to an arcuate holder someof the roughing spikes are always in contact with the sole regardless ofthe arc the users arm describes during reciprocation of the tool.

When the spikes in the roughing strap I! have become dull and worn theclamps I8 and H) are removed and a, new strap is secured to the holder Il by first securing it with the clamp l8 and then stretching the straparound the curved end of the holder and securing the other end of thestrap by the clamp 19. 7

It is apparent that this improved tool will prevent injuries to thehands of the shoe repairers which often occurred when using straighthandled tools with the roughing spikes on a flat plane, 1. e., similarto a file card which had to be drawn acrossa sole-at an oblique angle tothe margin and therefore had to be reciprocated in line with the usershand holding the sole.

Itis also apparent, that as the roughing strap holderv l I is offset atan angle with respect to the handle 23, the tool is drawn across themargin of the sole at'an acute angle and at each reciprocation of thetool the roughing spikes will cover more area Thus, the possibility ofleaving unroughened portions is minimized which results in less returnedshoes.

Sincecertain changes mayv be'made in the above construction anddifferent embodiments'of the invention could be made without departingfrom the scope thereof, it is intended that all matter contained in theabove description or shown i th empan i drawing s l b interpreted asillustrative and not in a limiting e ser 3 fng described my inventionwhat I claim as newanddesire tosecure by Letters Patent is:

1. A leather roughening tool comprising an arcuate holder having aroughing strap receiving groove formed therein extending the full lengthof its lCOIlVGX side and around one end thereof and along a portion ofits concave side, a handle formed integral with said holder, said handlebeing at an acute angle to said strap receiving groove, a leatherroughing strap in said groove and extending the full length thereof, andmeans, including clamp plates confined within said groove and lyingsubstantially flush with the contour of'said holder, clamping each endof said roughing strap to said holder.

2, A leather roughening tool comprising an arcuate'holderhaving aroughing strap receiving groove formed therein extending the full lengthof its convex side and around one end thereof and along a, portion-oiits concave side, a handle formed integral with said holder, said handlebeing at an acute angle to said strap receiving groove; tines projectingfrom said holder at each end of, said strap receiving groove, 'a leatherroughing strap in said groove and extending the full length thereof, andmeans, including clampplates confined'with n s id ro v a d l in sustantially flushv withthe contour of said holder, clamping each end ofsaid strap against said tines,

13'. A leather rqu hening tool comprising an 7 arcuate holder having aroughing strap receiving groove formed therein extending along its con--vex face, a handle extending from said holder at an acute angle to saidstrap receiving groove, a leather roughing strap within said groove,clamp plates fitting within said groove for securing said roughing strapto said holder, said roughing strap a receiving groove being :dee'per atportions occupied by said clamp plates than at other portions, wherebysaid roughing strap will be deformed by said clamp plates and the clampplates willbe 1 flush with the contourof said holder.

SCOTT ANDERSON,

